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361 lines
13 KiB
PHP
361 lines
13 KiB
PHP
<?php
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/*
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* This file is part of the Symfony package.
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*
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* (c) Fabien Potencier <fabien@symfony.com>
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*
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* For the full copyright and license information, please view the LICENSE
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* file that was distributed with this source code.
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*/
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namespace Symfony\Bundle\FrameworkBundle\Command;
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use Symfony\Component\Console\Exception\RuntimeException;
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use Symfony\Component\Console\Input\InputInterface;
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use Symfony\Component\Console\Input\InputOption;
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use Symfony\Component\Console\Output\OutputInterface;
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use Symfony\Component\Console\Style\SymfonyStyle;
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use Symfony\Component\EventDispatcher\EventDispatcher;
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use Symfony\Component\Filesystem\Exception\IOException;
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use Symfony\Component\Filesystem\Filesystem;
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use Symfony\Component\Finder\Finder;
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use Symfony\Component\HttpKernel\CacheClearer\CacheClearerInterface;
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use Symfony\Component\HttpKernel\KernelInterface;
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use Symfony\Component\HttpKernel\RebootableInterface;
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/**
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* Clear and Warmup the cache.
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*
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* @author Francis Besset <francis.besset@gmail.com>
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* @author Fabien Potencier <fabien@symfony.com>
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*
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* @final since version 3.4
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*/
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class CacheClearCommand extends ContainerAwareCommand
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{
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protected static $defaultName = 'cache:clear';
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private $cacheClearer;
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private $filesystem;
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private $warning;
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/**
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* @param CacheClearerInterface $cacheClearer
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*/
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public function __construct($cacheClearer = null, Filesystem $filesystem = null)
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{
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if (!$cacheClearer instanceof CacheClearerInterface) {
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@trigger_error(sprintf('%s() expects an instance of "%s" as first argument since Symfony 3.4. Not passing it is deprecated and will throw a TypeError in 4.0.', __METHOD__, CacheClearerInterface::class), \E_USER_DEPRECATED);
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parent::__construct($cacheClearer);
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return;
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}
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parent::__construct();
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$this->cacheClearer = $cacheClearer;
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$this->filesystem = $filesystem ?: new Filesystem();
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}
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/**
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* {@inheritdoc}
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*/
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protected function configure()
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{
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$this
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->setDefinition([
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new InputOption('no-warmup', '', InputOption::VALUE_NONE, 'Do not warm up the cache'),
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new InputOption('no-optional-warmers', '', InputOption::VALUE_NONE, 'Skip optional cache warmers (faster)'),
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])
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->setDescription('Clears the cache')
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->setHelp(<<<'EOF'
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The <info>%command.name%</info> command clears the application cache for a given environment
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and debug mode:
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<info>php %command.full_name% --env=dev</info>
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<info>php %command.full_name% --env=prod --no-debug</info>
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EOF
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)
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;
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}
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/**
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* {@inheritdoc}
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*/
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protected function execute(InputInterface $input, OutputInterface $output)
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{
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// BC to be removed in 4.0
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if (null === $this->cacheClearer) {
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$this->cacheClearer = $this->getContainer()->get('cache_clearer');
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$this->filesystem = $this->getContainer()->get('filesystem');
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$realCacheDir = $this->getContainer()->getParameter('kernel.cache_dir');
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}
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$fs = $this->filesystem;
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$io = new SymfonyStyle($input, $output);
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$kernel = $this->getApplication()->getKernel();
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$realCacheDir = isset($realCacheDir) ? $realCacheDir : $kernel->getContainer()->getParameter('kernel.cache_dir');
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// the old cache dir name must not be longer than the real one to avoid exceeding
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// the maximum length of a directory or file path within it (esp. Windows MAX_PATH)
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$oldCacheDir = substr($realCacheDir, 0, -1).('~' === substr($realCacheDir, -1) ? '+' : '~');
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$fs->remove($oldCacheDir);
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if (!is_writable($realCacheDir)) {
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throw new RuntimeException(sprintf('Unable to write in the "%s" directory.', $realCacheDir));
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}
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$io->comment(sprintf('Clearing the cache for the <info>%s</info> environment with debug <info>%s</info>', $kernel->getEnvironment(), var_export($kernel->isDebug(), true)));
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$this->cacheClearer->clear($realCacheDir);
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// The current event dispatcher is stale, let's not use it anymore
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$this->getApplication()->setDispatcher(new EventDispatcher());
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$containerDir = new \ReflectionObject($kernel->getContainer());
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$containerDir = basename(\dirname($containerDir->getFileName()));
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// the warmup cache dir name must have the same length as the real one
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// to avoid the many problems in serialized resources files
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$warmupDir = substr($realCacheDir, 0, -1).('_' === substr($realCacheDir, -1) ? '-' : '_');
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if ($output->isVerbose() && $fs->exists($warmupDir)) {
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$io->comment('Clearing outdated warmup directory...');
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}
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$fs->remove($warmupDir);
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$fs->mkdir($warmupDir);
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if (!$input->getOption('no-warmup')) {
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if ($output->isVerbose()) {
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$io->comment('Warming up cache...');
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}
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$this->warmup($warmupDir, $realCacheDir, !$input->getOption('no-optional-warmers'));
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if ($this->warning) {
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@trigger_error($this->warning, \E_USER_DEPRECATED);
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$io->warning($this->warning);
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$this->warning = null;
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}
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}
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if (!$fs->exists($warmupDir.'/'.$containerDir)) {
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$fs->rename($realCacheDir.'/'.$containerDir, $warmupDir.'/'.$containerDir);
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touch($warmupDir.'/'.$containerDir.'.legacy');
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}
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if ('/' === \DIRECTORY_SEPARATOR && $mounts = @file('/proc/mounts')) {
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foreach ($mounts as $mount) {
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$mount = \array_slice(explode(' ', $mount), 1, -3);
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if (!\in_array(array_pop($mount), ['vboxsf', 'nfs'])) {
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continue;
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}
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$mount = implode(' ', $mount).'/';
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if (0 === strpos($realCacheDir, $mount)) {
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$io->note('For better performances, you should move the cache and log directories to a non-shared folder of the VM.');
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$oldCacheDir = false;
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break;
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}
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}
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}
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if ($oldCacheDir) {
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$fs->rename($realCacheDir, $oldCacheDir);
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} else {
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$fs->remove($realCacheDir);
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}
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$fs->rename($warmupDir, $realCacheDir);
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if ($output->isVerbose()) {
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$io->comment('Removing old cache directory...');
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}
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try {
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$fs->remove($oldCacheDir);
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} catch (IOException $e) {
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if ($output->isVerbose()) {
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$io->warning($e->getMessage());
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}
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}
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if ($output->isVerbose()) {
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$io->comment('Finished');
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}
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$io->success(sprintf('Cache for the "%s" environment (debug=%s) was successfully cleared.', $kernel->getEnvironment(), var_export($kernel->isDebug(), true)));
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}
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/**
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* @param string $warmupDir
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* @param string $realCacheDir
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* @param bool $enableOptionalWarmers
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*/
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protected function warmup($warmupDir, $realCacheDir, $enableOptionalWarmers = true)
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{
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// create a temporary kernel
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$realKernel = $this->getApplication()->getKernel();
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if ($realKernel instanceof RebootableInterface) {
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$realKernel->reboot($warmupDir);
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$tempKernel = $realKernel;
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} else {
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$this->warning = 'Calling "cache:clear" with a kernel that does not implement "Symfony\Component\HttpKernel\RebootableInterface" is deprecated since Symfony 3.4 and will be unsupported in 4.0.';
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$realKernelClass = \get_class($realKernel);
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$namespace = '';
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if (false !== $pos = strrpos($realKernelClass, '\\')) {
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$namespace = substr($realKernelClass, 0, $pos);
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$realKernelClass = substr($realKernelClass, $pos + 1);
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}
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$tempKernel = $this->getTempKernel($realKernel, $namespace, $realKernelClass, $warmupDir);
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$tempKernel->boot();
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$tempKernelReflection = new \ReflectionObject($tempKernel);
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$tempKernelFile = $tempKernelReflection->getFileName();
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}
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// warmup temporary dir
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$warmer = $tempKernel->getContainer()->get('cache_warmer');
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if ($enableOptionalWarmers) {
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$warmer->enableOptionalWarmers();
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}
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$warmer->warmUp($warmupDir);
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// fix references to cached files with the real cache directory name
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$search = [$warmupDir, str_replace('\\', '\\\\', $warmupDir)];
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$replace = str_replace('\\', '/', $realCacheDir);
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foreach (Finder::create()->files()->in($warmupDir) as $file) {
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$content = str_replace($search, $replace, file_get_contents($file), $count);
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if ($count) {
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file_put_contents($file, $content);
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}
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}
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if ($realKernel instanceof RebootableInterface) {
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return;
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}
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// fix references to the Kernel in .meta files
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$safeTempKernel = str_replace('\\', '\\\\', \get_class($tempKernel));
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$realKernelFQN = \get_class($realKernel);
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foreach (Finder::create()->files()->depth('<3')->name('*.meta')->in($warmupDir) as $file) {
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file_put_contents($file, preg_replace(
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'/(C\:\d+\:)"'.$safeTempKernel.'"/',
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sprintf('$1"%s"', $realKernelFQN),
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file_get_contents($file)
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));
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}
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// fix references to container's class
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$tempContainerClass = $tempKernel->getContainerClass();
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$realContainerClass = $tempKernel->getRealContainerClass();
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foreach (Finder::create()->files()->depth('<2')->name($tempContainerClass.'*')->in($warmupDir) as $file) {
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$content = str_replace($tempContainerClass, $realContainerClass, file_get_contents($file));
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file_put_contents($file, $content);
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rename($file, str_replace(\DIRECTORY_SEPARATOR.$tempContainerClass, \DIRECTORY_SEPARATOR.$realContainerClass, $file));
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}
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if (is_dir($tempContainerDir = $warmupDir.'/'.\get_class($tempKernel->getContainer()))) {
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foreach (Finder::create()->files()->in($tempContainerDir) as $file) {
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$content = str_replace($tempContainerClass, $realContainerClass, file_get_contents($file));
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file_put_contents($file, $content);
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}
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}
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// remove temp kernel file after cache warmed up
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@unlink($tempKernelFile);
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}
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/**
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* @param string $namespace
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* @param string $parentClass
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* @param string $warmupDir
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*
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* @return KernelInterface
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*/
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protected function getTempKernel(KernelInterface $parent, $namespace, $parentClass, $warmupDir)
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{
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$projectDir = '';
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$cacheDir = var_export($warmupDir, true);
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$rootDir = var_export(realpath($parent->getRootDir()), true);
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$logDir = var_export(realpath($parent->getLogDir()), true);
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// the temp kernel class name must have the same length than the real one
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// to avoid the many problems in serialized resources files
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$class = substr($parentClass, 0, -1).'_';
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// the temp container class must be changed too
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$container = $parent->getContainer();
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$realContainerClass = var_export($container->hasParameter('kernel.container_class') ? $container->getParameter('kernel.container_class') : \get_class($parent->getContainer()), true);
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$containerClass = substr_replace($realContainerClass, '_', -2, 1);
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if (method_exists($parent, 'getProjectDir')) {
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$projectDir = var_export(realpath($parent->getProjectDir()), true);
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$projectDir = <<<EOF
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public function getProjectDir()
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{
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return $projectDir;
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}
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EOF;
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}
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$code = <<<EOF
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<?php
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namespace $namespace
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{
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class $class extends $parentClass
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{
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public function getCacheDir()
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{
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return $cacheDir;
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}
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public function getRootDir()
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{
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return $rootDir;
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}
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$projectDir
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public function getLogDir()
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{
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return $logDir;
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}
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public function getRealContainerClass()
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{
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return $realContainerClass;
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}
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public function getContainerClass()
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{
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return $containerClass;
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}
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protected function buildContainer()
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{
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\$container = parent::buildContainer();
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// filter container's resources, removing reference to temp kernel file
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\$resources = \$container->getResources();
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\$filteredResources = [];
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foreach (\$resources as \$resource) {
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if ((string) \$resource !== __FILE__) {
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\$filteredResources[] = \$resource;
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}
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}
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\$container->setResources(\$filteredResources);
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return \$container;
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}
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}
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}
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EOF;
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$this->filesystem->mkdir($warmupDir);
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file_put_contents($file = $warmupDir.'/kernel.tmp', $code);
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require_once $file;
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$class = "$namespace\\$class";
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return new $class($parent->getEnvironment(), $parent->isDebug());
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}
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}
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